<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<input type="file" accept="image/*" />
	</body>
	<script type="text/javascript">
		/*var arr = [
			[100, "90", 80, 60, 50],
			[51, 551, 45, "145", 55],
			[15, "15", 5551, 145]
		]
		var arrdj = [];
		arrdj = [...arr];
		
		arrdj.map((ele, i) => {
			ele.map((el, o) => {
				if (typeof el === "string") {
					arrdj[i][o] = Number(el);
				}
			})
		})
		console.log(arrdj);
		console.log(arr);*/
		/*var arr1 =[15, 15, 5551, 145]
		var arr2 = arr1.slice(0);
		var arr2 = arr1.concat();
		var arr2 = [...arr1];
		arr2[0] = 0;
		console.log(arr1);
		console.log(arr2);*/
		
		var arr = [
			[100, "90", 80, 60, 50],
			[51, 551, 45, "145", 55],
			[15, "15", 5551, 145]
		]
		var arrdj = [...arr];
		arrdj[0] = 1;
		console.log(arrdj);
		console.log(arr);
	</script>
</html>
